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https://www.readbyqxmd.com/read/28930285/interleukin-17a-negatively-regulates-lymphangiogenesis-in-t-helper-17-cell-mediated-inflammation
#1
H J Park, C M Yuk, K Shin, S-H Lee
During inflammation lymphatic vessels (LVs) are enlarged and their density is increased to facilitate the migration of activated immune cells and antigens. However, after antigen clearance, the expanded LVs shrink to maintain homeostasis. Here we show that interleukin (IL)-17A, secreted from T helper type 17 (TH17) cells, is a negative regulator of lymphangiogenesis during the resolution phase of TH17-mediated immune responses. Moreover, IL-17A suppresses the expression of major lymphatic markers in lymphatic endothelial cells and decreases in vitro LV formation...
September 20, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28929168/long-term-impact-of-ixekizumab-on-psoriasis-itch-severity-results-from-a-phase-iii-clinical-trial-and-long-term-extension
#2
Alexandra B Kimball, Thomas Luger, Alice Gottlieb, Luis Puig, Roland Kaufmann, Russel Burge, Chen-Yen Lin, Gil Yosipovitch
Itching is a prevalent plaque psoriasis symptom. Ixekizumab, an IL-17A antagonist, has demonstrated rapid, significant improvements in itch severity over 12 weeks in Phase III psoriasis trials (UNCOVER-1, UNCOVER-2). We assessed the long-term (through 60 weeks) effect of ixekizumab maintenance therapy (80-mg ixekizumab every 4 weeks [IXEQ4W]) on itch severity, using the Itch Numeric Rating Scale, in psoriasis patients who received ixekizumab, placebo, or etanercept for 12 weeks in the Phase III UNCOVER-3 trial...
September 20, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28927906/il-17a-contributes-to-reducing-ifn-%C3%AE-il-4-ratio-and-persistence-of-entamoeba-histolytica-during-intestinal-amebiasis
#3
Sharmina Deloer, Risa Nakamura, Mihoko Kikuchi, Taeko Moriyasu, Yombo Dan Justin Kalenda, Eman Sayed Mohammed, Masachika Senba, Yoichiro Iwakura, Hiroki Yoshida, Shinjiro Hamano
Amebiasis is an infectious disease caused by Entamoeba histolytica, an anaerobic protozoan parasite, and is a major public health problem worldwide, particularly in areas with inadequate sanitation and poor hygiene. Th1 responses, represented by interferon gamma (IFN-γ), play a protective role by clearing the amebae from the gut, whereas Th2 responses are responsible for chronic infection. Th17 responses preconditioned by vaccination or by modulating the intestinal microbiome protect mice from the settlement of E...
September 16, 2017: Parasitology International
https://www.readbyqxmd.com/read/28927890/reduction-of-inflammatory-and-cardiovascular-proteins-in-the-blood-of-psoriasis-patients-differential-responses-between-tofacitinib-and-etanercept-after-4-weeks-of-treatment
#4
Jaehwan Kim, Lewis Tomalin, Julie Lee, Lori J Fitz, Gabriel Berstein, Joel Correa-da Rosa, Sandra Garcet, Michelle A Lowes, Hernan Valdez, Robert Wolk, Mayte Suarez-Farinas, James G Krueger
Psoriasis patients have increased risk of myocardial infarction, and psoriasis is now recognized as an independent risk factor for coronary heart disease and cardiovascular mortality. To understand the effects of psoriasis medications on systemic inflammation associated with cardiovascular risks, we studied blood proteins related to inflammation and cardiovascular disease archived from a phase 3 clinical trial of tofacitinib and etanercept in adults with moderate-to-severe psoriasis. 157 blood proteins were quantified by a proximity extension assay from 266 patients at baseline and week 4...
September 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28927758/evaluation-of-proinflammatory-and-immunosuppressive-cytokines-in-blood-and-bone-marrow-of-healthy-hematopoietic-stem-cell-donors
#5
Wojciech Fidyk, Iwona Mitrus, Agnieszka Ciomber, Andrzej Smagur, Agata Chwieduk, Magdalena Głowala-Kosińska, Sebastian Giebel
INTRODUCTION: Cytokine composition of bone marrow microenvironment in comparison to blood is poorly explored. The goal of this study was to investigate the levels of cytokines present in peripheral blood and bone marrow of healthy hematopoietic stem cells donors. The data obtained on this subject with addition to cytometric analysis can provide new insight into the hematopoietic stem cells microenvironment. METHODOLOGY: Study consisted of cytokine concentration analysis performed by ELISA tests of peripheral blood of healthy peripheral blood stem cells donors and bone marrow of healthy bone marrow donors...
September 15, 2017: Cytokine
https://www.readbyqxmd.com/read/28926857/the-amelioration-of-insulin-resistance-in-salt-loading-subjects-by-potassium-supplementation-is-associated-with-a-reduction-in-plasma-il-17a-levels
#6
Wen Wen, Zhaofei Wan, Dong Zhou, Juan Zhou, Zuyi Yuan
Background High dietary salt intake contributes to the development of autoimmune/inflammatory diseases including metabolic syndrome (MetS) which potassium supplementation can potentially reverse. T helper (Th) 17 cells as well as its production interleukin (IL)-17A are involved in the pathogenesis of MetS. The polarization of Th17 cells and enhanced IL-17A production induced by high salt might increase the risk of autoimmune/inflammatory diseases. Methods 45 normotensive subjects (aged 29 to 65 years) were enrolled from a rural community of Northern China at random...
September 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28926467/a-systematic-review-and-meta-analysis-of-efficacy-and-safety-of-novel-interleukin-inhibitors-in-the-management-of-psoriatic-arthritis
#7
Jawad Bilal, Irbaz Bin Riaz, Muhammad Umar Kamal, Mazen Elyan, Dominick Sudano, Muhammad Asim Khan
OBJECTIVE: The aim of this study was to systemically review the efficacy and safety of inhibitors of interleukin 6 (IL-6): clazakizumab, IL-12/23: ustekinumab, and IL-17A: secukinumab, brodalumab, and ixekizumab in psoriatic arthritis (PsA). METHODS: The literature search was conducted using MEDLINE, EMBASE, Cochrane Library, Scopus, and Web of Science. We included randomized controlled trials that assessed the efficacy of IL inhibitors and reported American College of Rheumatology 20 response at 24 weeks...
September 19, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28922439/serum-concentrations-of-th17-associated-interleukins-and-autoimmune-phenomena-are-associated-with-the-degree-of-liver-damage-in-alcoholic-liver-disease
#8
Anna Parfieniuk-Kowerda, Magdalena Swiderska, Tomasz Szulzyk, Jerzy Jaroszewicz, Tadeusz W Lapinski, Robert Flisiak
BACKGROUND AND AIMS: Recent reports suggest an involvement of Th17 responses in inflammatory and autoimmune reactions in alcoholic liver disease (ALD). Our study aimed to assess serum levels of Th17-interleukins in ALD with regard to the frequency of liver-specific autoantibodies and degree of liver damage. METHODS: Ninety-five patients with ALD were enrolled. Serum concentrations of IL-17F, IL-17A, IL-22 were assessed by ELISA. The presence of autoantibodies AMA-M2, SLA/LP, LKM-1, LC1, anti-F-actin, anti-desmin and anti-myosin in serum was assessed by immunoblotting, ANA antibodies were detected by ELISA...
September 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28921400/gut-microbiota-and-il-17a-physiological-and-pathological-responses
#9
Banafsheh Douzandeh-Mobarrez, Ashraf Kariminik
IL-17A is a cytokine which is produced by several immune and non-immune cells. The cytokine plays dual roles from protection from microbes and protection from pro-inflammatory based diseases to induction of the pro-inflammatory based diseases. The main mechanisms which lead to the controversial roles of IL-17A are yet to be clarified. Gut microbiota (GM) are the resident probiotic bacteria in the gastrointestinal tracts which have been introduced as a plausible regulator of IL-17A production and functions. This review article describes the recent information regarding the roles played by GM in determination of IL-17A functions outcome...
September 18, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28919897/altered-immune-activation-and-il-23-signaling-in-response-to-candida-albicans-in-autoimmune-polyendocrine-syndrome-type-1
#10
Øyvind Bruserud, Eirik Bratland, Alexander Hellesen, Nicolas Delaleu, Håkon Reikvam, Bergithe E Oftedal, Anette S B Wolff
OBJECTIVE: Autoimmune polyendocrine syndrome type 1 (APS-1) is a rare, childhood onset disease caused by mutations in the autoimmune regulator (AIRE) gene. Chronic mucocutaneous candidiasis (CMC) is one of the three major disease components and is, to date, mainly explained by the presence of neutralizing auto-antibodies against cytokines [interleukin (IL)-17A, IL-17F, and IL-22] from T helper 17 cells, which are critical for the protection against fungal infections. However, patients without current auto-antibodies also present CMC and we, therefore, hypothesized that other immune mechanisms contribute to CMC in APS-1...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28919411/homocysteine-upregulates-interleukin-17a-expression-via-nsun2-mediated-rna-methylation-in-t-lymphocytes
#11
Nan Wang, Hao Tang, Xian Wang, Wengong Wang, Juan Feng
Interleukin-17A (IL-17A) has been proven to participate in the process of various autoimmune diseases. The elevation of plasma homocysteine (Hcy), known as hyperhomocysteinemia (HHcy), is related to various chronic inflammatory diseases. Though HHcy-induced upregulation of IL-17A expression in T lymphocytes has been examined, the way in which IL-17A is regulated remains unclear. In this study, western blotting assays showed that Hcy (100 μM) upregulated NOP2/Sun domain family, member 2 (NSun2) expression in rat T lymphocytes...
September 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28919109/long-term-measurements-of-human-inflammatory-cytokines-reveal-complex-baseline-variations-between-individuals
#12
Danlu Wu, Trinh L Dinh, Bruce P Bausk, David R Walt
Comprehensive characterization of the healthy human proteome baseline is essential for personalized medicine. Baseline data are necessary to understand the variation between individuals as well as longitudinal variation within individuals. Many important protein biomarkers, such as cytokines, exist at extremely low or undetectable levels in the healthy state. This paper describes results from a 14-week study of healthy human subjects using ultrasensitive single molecule array (Simoa) assays to measure both intra and intersubject variation of 15 cytokines...
September 14, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28912779/v%C3%AE-4-%C3%AE-%C3%AE-t-cells-aggravate-severe-h1n1-influenza-virus-infection-induced-acute-pulmonary-immunopathological-injury-via-secreting-interleukin-17a
#13
Chunxue Xue, Mingjie Wen, Linlin Bao, Hui Li, Fengdi Li, Meng Liu, Qi Lv, Yunqing An, Xulong Zhang, Bin Cao
The influenza A (H1N1) pdm09 virus remains a critical global health concern and causes high levels of morbidity and mortality. Severe acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are the major outcomes among severely infected patients. Our previous study found that interleukin (IL)-17A production by humans or mice infected with influenza A (H1N1) pdm09 substantially contributes to ALI and subsequent morbidity and mortality. However, the cell types responsible for IL-17A production during the early stage of severe influenza A (H1N1) pdm09 infection remained unknown...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28912678/il-17a-enhances-microglial-response-to-ogd-by-regulating-p53-and-pi3k-akt-pathways-with-involvement-of-ros-hmgb1
#14
Bin Zhang, Ning Yang, Zhi-Ming Mo, Shao-Peng Lin, Feng Zhang
Cerebral ischemia-reperfusion injury (IRI) has a complex pathogenesis, and interleukin-17 (IL-17) is a newly identified class of the cytokine family that plays an important role in ischemic inflammation. An oxygen-glucose deprivation (OGD) model showed that IL-17A expression was significantly up-regulated in microglial cells. After IL-17A siRNA transfection, the inhibition of proliferation, and the increased apoptosis in microglial cells, induced by OGD/reperfusion, was improved, and the elevation of Caspase-3, Caspase-8, Caspase-9, and poly ADP ribose polymerase (PARP) activities was inhibited...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28912605/peripheral-human-cd4-cd8-t-lymphocytes-exhibit-a-memory-phenotype-and-enhanced-responses-to-il-2-il-7-and-il-15
#15
Marie-Laure Clénet, François Gagnon, Ana Carmena Moratalla, Emilie C Viel, Nathalie Arbour
CD4(+)CD8(+) T lymphocytes account for 1-2% of circulating human T lymphocytes, but their frequency is augmented in several diseases. The phenotypic and functional properties of these T lymphocytes are still ill-defined. We performed an ex vivo characterization of CD4(+)CD8(+) T lymphocytes from the blood of healthy individuals. We observed that CD4(+)CD8(+) T lymphocytes exhibit several characteristics associated with memory T lymphocytes including the expression of chemokine receptors (e.g. CCR7, CXCR3, CCR6) and activation markers (e...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28911642/lactobacillus-pentosus-gmnl-77-inhibits-skin-lesions-in%C3%A2-imiquimod-induced-psoriasis-like-mice
#16
Yi-Hsing Chen, Chieh-Shan Wu, Ya-Husan Chao, Chi-Chen Lin, Hui-Yun Tsai, Yi-Rong Li, Yi-Zhen Chen, Wan-Hua Tsai, Yu-Kuo Chen
Psoriasis, which is regarded as a T-cell-mediated chronic inflammatory skin disease, is characterized by hyperproliferation and poor differentiation of epidermal keratinocytes. In this study, we aimed to determine the in vivo effect of a potentially probiotic strain, Lactobacillus pentosus GMNL-77, in imiquimod-induced epidermal hyperplasia and psoriasis-like skin inflammation in BALB/c mice. Oral administration of L. pentosus GMNL-77 significantly decreased erythematous scaling lesions. Real-time polymerase chain reaction showed that treatment with L...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28903122/impact-of-ixekizumab-treatment-on-depressive-symptoms-and-systemic-inflammation-in-patients-with-moderate-to-severe-psoriasis-an-integrated-analysis-of-three-phase-3-clinical-studies
#17
Christopher E M Griffiths, Maurizio Fava, Andrew H Miller, James Russell, Susan G Ball, Wen Xu, Nayan Acharya, Mark Hyman Rapaport
BACKGROUND: Depression is a common comorbidity in psoriasis, and both conditions are associated with systemic inflammation. The efficacy of ixekizumab, a high-affinity monoclonal antibody that selectively targets interleukin (IL)-17A, was evaluated in patients with moderate-to-severe plaque psoriasis (psoriasis) and depressive symptoms that were at least moderately severe. METHODS: Data were integrated from 3 randomized, double-blind, controlled phase 3 trials. At baseline and week 12, depressive symptoms and inflammation were assessed by the 16-item Quick Inventory of Depressive Symptomology - Self-Report (QIDS-SR16) and by a high-sensitivity assay of serum C-reactive protein (hsCRP), respectively...
September 14, 2017: Psychotherapy and Psychosomatics
https://www.readbyqxmd.com/read/28902840/maternal-gut-bacteria-promote-neurodevelopmental-abnormalities-in-mouse-offspring
#18
Sangdoo Kim, Hyunju Kim, Yeong Shin Yim, Soyoung Ha, Koji Atarashi, Tze Guan Tan, Randy S Longman, Kenya Honda, Dan R Littman, Gloria B Choi, Jun R Huh
Maternal immune activation (MIA) contributes to behavioural abnormalities associated with neurodevelopmental disorders in both primate and rodent offspring. In humans, epidemiological studies suggest that exposure of fetuses to maternal inflammation increases the likelihood of developing autism spectrum disorder. In pregnant mice, interleukin-17a (IL-17a) produced by T helper 17 (TH17) cells (CD4(+) T helper effector cells involved in multiple inflammatory conditions) induces behavioural and cortical abnormalities in the offspring exposed to MIA...
September 13, 2017: Nature
https://www.readbyqxmd.com/read/28902433/curcumin-alleviates-il-17a-mediated-p53-pai-1-expression-in-bleomycin-induced-alveolar-basal-epithelial-cells
#19
Mahesh Manjunath Gouda, Ashwini Prabhu, Yashodhar Prabhakar Bhandary
Bleomycin mediated inflammatory pathway is known to play an important role in the up regulation of oxidative stress. IL-17A is a pro-inflammatory cytokine involved in the modulation of fibrosis. The complex underlying mechanism for the said phenomenon remains unclear. This newly defined investigation was designed to understand the changes associated with 1L-17A mediated up-regulation of p53 and PAI-1 expression and the role of curcumin in attenuating this process. A549 cells were treated with bleomycin (BLM) and IL-17A to induce the inflammatory response in vitro...
September 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28901004/bcl-3-induced-by-il-22-via-stat3-activation-acts-as-a-potentiator-of-psoriasis-related-gene-expression-in-epidermal-keratinocytes
#20
Mikiko Tohyama, Yuji Shirakata, Yasushi Hanakawa, Xiuju Dai, Ken Shiraishi, Masamoto Murakami, Saori Miyawaki, Hideki Mori, Ryo Utsunomiya, Kana Masuda, Koji Hashimoto, Koji Sayama
IL-22 induces STAT3 phosphorylation and mediates psoriasis-related gene expression. However, the signaling mechanism leading from pSTAT3 to the expression of these genes remains unclear. We focused on Bcl-3, which is induced by STAT3 activation and mediates gene expression. In cultured human epidermal keratinocytes, IL-22 increased Bcl-3, which was translocated to the nucleus with p50 via STAT3 activation. The increases in CXCL8, S100As and human β-defensin 2 mRNA expression caused by IL-22 were abolished by siRNA against Bcl-3...
September 12, 2017: European Journal of Immunology
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